PangoGravity: @PANGO_GRAVITY_SOUTH: Glyphs stand upright (default) @PANGO_GRAVITY_EAST: Glyphs are rotated 90 degrees clockwise @PANGO_GRAVITY_NORTH: Glyphs are upside-down @PANGO_GRAVITY_WEST: Glyphs are rotated 90 degrees counter-clockwise @PANGO_GRAVITY_AUTO: Gravity is resolved from the context matrix
PangoGravityHint: @PANGO_GRAVITY_HINT_NATURAL: scripts will take their natural gravity based on the base gravity and the script. This is the default. @PANGO_GRAVITY_HINT_STRONG: always use the base gravity set, regardless of the script. @PANGO_GRAVITY_HINT_LINE: for scripts not in their natural direction (eg. Latin in East gravity), choose per-script gravity such that every script respects the line progression. This means, Latin and Arabic will take opposite gravities and both flow top-to-bottom for example.